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Free AI Tools
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Browse 15 Tutorials → Try Tools (中文版) →

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No hidden fees, no trial periods, no premium tiers. Forever free.

🔒 Privacy First

All processing in your browser. Files never uploaded to any server.

⚡ No Signup

Open and use immediately. No email, no account, no registration.

🌍 Multi-Language

Articles in English. Tools support multi-language content.

🛠 AI Tools

Browser-based AI tools for video, image, PDF, and audio processing

⚠️ Note: Interactive tools are currently in the Chinese version. Click any tool below to open it in a new tab. Tutorials and articles below are fully translated to English.
🎬
FCPXML Subtitle Converter →
Convert JianYing/PR subtitles to FCPX project files. Browser-based, no upload.
🎥
Video Toolbox →
Compress video, MP4 to GIF, watermark removal, merge, crop.
🖼️
Image Toolbox →
Compress, crop, cutout, restore old photos, ID photo.
📄
PDF Toolbox →
PDF to Word / Markdown / Image, OCR, merge.
🎵
Audio Toolbox →
Transcribe, vocal separation, denoise, format convert.
✨
AI Prompt Optimizer →
300+ templates, multi-model support, DeepSeek / ChatGPT / Claude.

📚 In-Depth Tutorials

15 articles covering video/PDF/image processing, AI prompts, viral writing

🎬

FCPXML Subtitle Converter: Complete Guide

JianYing/PR subtitles → FCPX project files in one go · 4 scenarios · 6 FAQs

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✨

AI Prompt Engineer Introduction

4 elements + 3 examples + 4-week path · Make AI output quality 10x better

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🛠️

10 Free AI Tools 2026

10 truly free, no signup, no upload tools · All scenarios covered

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🎥

Video Compression Complete Guide

1GB video to 100MB with no quality loss · WeChat/YouTube/archive 5 scenarios

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🎞️

MP4 to GIF Complete Tutorial

3 minutes to make HD GIF · 5 scenarios · file compressed to under 1MB

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📄

PDF to Word Free Complete Tutorial

5 free tools tested · 95%+ format preservation · OCR support

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📝

PDF to Markdown Complete Guide

3 free tools compared · Academic/tech docs 4 scenarios

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🔍

Scanned PDF to Text OCR Guide

4 tools tested · Mixed Chinese-English/old books/handwriting

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🖼️

Image Compression Complete Guide

JPEG/PNG/WebP/AVIF compared · Compress to 1/10

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📸

Old Photo Restoration Tutorial

AI restores faded/scratched/blurry photos · 5 problems fixed

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✂️

AI One-Click Cutout Guide

From ID photo to e-commerce product · 5 free tools compared

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📕

AI Write Xiaohongshu Viral Content Guide

5-step process + 6 title formulas · 5 viral templates

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📱

AI Write WeChat Public Account 7 Secrets

From topic to formatting · Data analysis + monetization

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🚀

DeepSeek Prompt Engineering 9 Tips

Make the strongest Chinese AI understand you · 9 tips + 6 scenarios

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🚫

Video Watermark Removal 5 Methods

From JianYing to AI smart removal · Douyin/Bilibili/stock sites

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📋

View All 15 Tutorials

Complete list with search and keyword filtering

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